Hadoop

Hi all;
I like to learn more about Hadoop and big data? Can someone shine some light over it? Esp. the need and what Hadoop does?
totaramAsked:
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PortletPaulEE Topic AdvisorCommented:
Clearly the Apache project site itself is a good source
http://hadoop.apache.org/

I particularly liked this slideshow's overview slides (4 to 15)
http://www.slideshare.net/kkrugler/a-very-short-intro-to-hadoop

& here is a 8 minute youtube that may get you started.
https://www.youtube.com/watch?v=FHVuRxJpiwI

Also there are some previous questions on this, here's a start into those:
http://www.experts-exchange.com/Database/Q_28627126.html

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